[Stainless Steel Material] The towel hooks are made of high-quality SUS304 stainless steel, with a classic matte black finish. They are corrosion-resistant, rustproof, self-adhesive, and waterproof. [Strong Load Capacity] These wall hooks are extremely adhesive and waterproof, able to withstand a force of 7 kg. Please wait 24 hours before hanging anything on them. [No Drilling Required] Easy to install, these self-adhesive hooks do not require drilling holes in the wall. Simply remove the sticky strip on the back and stick them to the wall. Using a hairdryer to heat the adhesive can remove the hooks. No damage to the wall. [Wide Application - 4 Hooks] The adhesive hooks can be used on a wide variety of smooth surfaces, such as wood, glass, marble, ceramic tiles, etc. (They are not suitable for uneven wallpaper, plaster walls, or rough textured surfaces) [2 Extra Adhesive Pads] With these self-adhesive foam pads, you can move the bathroom hooks to other locations or reuse your old